Post learning assessment chapter 7 APES

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Which interaction could potentially lead to coevolution?

A species of mouse becoming faster to escape a predator snake

A close look at almost any terrestrial community or ecosystem reveals that it consists of an ever-changing mosaic of patches of vegetation in different stages of _____.

succession

In some areas, ________ can rise or decline seasonally and from year to year because of variations in weather, such as a drought that causes decreases in available vegetation.

carrying capacity

The use of venom when attacking prey is an example of _____.

chemical warfare

Which four variables govern changes in population size?

births, deaths, immigration, emigration

Secondary ecological succession occurs in _____ areas.

disturbed

When two species compete with one another for the same resources, the ecological _____ overlap.

niches

What is the most often the limiting factor for populations on land ?

precipitation

What is the difference between commensalism and mutualism?

Commensalism benefits one species but has little effect on the other, and mutualism benefits both species.

A _____ species has slow population growth rates and long life spans, while _____ species have numerous small offspring and fast population growth rates.

K-selected; R-selected

Which type of environment is likely to experience primary succession?

abandoned parking lot or highway

Which species display predator-prey interactions?

grizzly bears and cutworm moths

Too much or too little of any physical or chemical factor can prevent the growth of a population, even if all other factors are at or near the optimum conditions. This ecological principle is called the _____.

limiting factor principle

What are the inertia and resilience properties of a typical grassland ecosystem?

low inertia and high resilience

The evolution of specialized beaks to take advantage of certain types of food is an example of _____.

natural selection


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